Leaf spring hanger for exhaust duct liner

Abstract

A hanger assembly for use between a first duct and a second duct has a flexible leaf spring having a body and a leg, a locking member for attaching the leg to the first duct, and a mounting member for attaching the body to the second duct.

The invention claimed is: 
     
       1. A hanger assembly for a gas turbine engine comprising:
 a flexible leaf spring having a body and a pair of legs spaced apart by said body, 
 a locking member attaching said pair of legs to a first duct of the gas turbine engine, said locking member including a cover and a pair of retention members spaced apart by said cover, each of said pair of retention members configured to capture one leg of said pair of legs, and 
 a mounting member attaching said body to a second duct of the gas turbine engine, 
 wherein each of said retention members includes a first flange formed upon said cover and extending from said cover towards said body, and a second flange extending from said first flange at an outer obtuse angle, wherein said first flange and said second flange capture one leg of said pair of legs. 
 
     
     
       2. The hanger assembly as recited in  claim 1 , wherein said body includes a circular portion extending therefrom. 
     
     
       3. The hanger assembly as recited in  claim 2 , wherein said body has an opening therein cooperating with a stud extending from said second duct. 
     
     
       4. The hanger assembly as recited in  claim 1 , wherein each of said pair of legs includes a first portion that extends from said body at an inner obtuse angle. 
     
     
       5. The hanger assembly as recited in  claim 4 , wherein each of said pair of legs includes a second portion that extends from said first portion at an inner acute angle. 
     
     
       6. The hanger assembly as recited in  claim 5 , wherein each of said pair of legs includes a third portion that extends from said second portion at an outer acute angle. 
     
     
       7. The hanger assembly as recited in  claim 1 , wherein said one leg of said pair of legs has a portion disposed at an acute angle, such portion captured by said first flange and said second flange wherein said acute angle and said outer obtuse angle are complementary to each other. 
     
     
       8. The hanger assembly as recited in  claim 7 , wherein said second flange is wider than said portion. 
     
     
       9. An exhaust liner assembly for a gas turbine engine, comprising:
 a liner defining an inner surface exposed to exhaust gases, and a duct spaced radially outward of the liner; and 
 a hanger assembly supporting the liner relative to the duct, the hanger assembly including a flexible leaf spring having a body and a leg, a locking member attached said leg to said duct, said locking member including a cover partially disposed outside of said duct, and a mounting member attaching said body to said liner, 
 wherein said locking member includes a first flange formed upon said cover and extending from said cover towards said body and a second flange extending from said first flange at an outer obtuse angle, wherein said first flange and said second flange capture said leg. 
 
     
     
       10. The exhaust liner assembly as recited in  claim 9 , wherein a first portion of said leg extends from said body at an inner obtuse angle, a second portion of said leg extends from said first portion of said leg at an inner acute angle, and a third portion of said leg extends from said second portion of said leg at an outer acute angle. 
     
     
       11. A gas turbine engine comprising:
 a fan section including a plurality of fan blades rotatable about an axis; 
 a compressor section in communication with the fan section; 
 a combustor in fluid communication with the compressor section; 
 a turbine section in fluid communication with the combustor and driving the fan section and the compressor section; and 
 an exhaust liner assembly aft of the turbine section, the exhaust liner assembly including a liner defining an inner surface exposed to exhaust gases, and a duct spaced radially outward of the liner; and 
 a hanger assembly supporting the liner relative to the duct, the hanger assembly including a flexible leaf spring having a body and a leg, a locking member attaching said leg to said duct; and a mounting member attaching said body to said liner; and 
 wherein said locking member includes a cover disposed outside of said duct, a first flange formed upon said cover and extending from said cover towards said body and a second flange extending from said first flange at an outer obtuse angle, wherein said first flange and said second flange capture said leg. 
 
     
     
       12. The gas turbine engine as recited in  claim 11 , wherein a first portion of said leg extends from said body at an inner obtuse angle, wherein a second portion of said leg extends from said first portion of said leg at an inner acute angle and wherein a third portion of said leg extends from said second portion of said leg at an outer acute angle. 
     
     
       13. The hanger assembly as recited in  claim 11 , wherein said leg has a portion disposed at an acute angle, such portion captured by said first flange and said second flange wherein said acute angle and said outer obtuse angle are complementary to each other. 
     
     
       14. The gas turbine engine as recited in  claim 11 , wherein said body includes a circular portion extending therefrom, said circular portion configured to abut said liner. 
     
     
       15. The gas turbine engine as recited in  claim 11 , wherein said first flange is configured to extend through an opening defined by said duct, and said cover is configured to span across said opening. 
     
     
       16. The gas turbine engine as recited in  claim 15 , wherein said cover defines a second axis, said first flange extending in a direction parallel to said second axis, and said first and second flanges being radially inward of said leg relative to said second axis when located in an installed position.